Adding changes to accommodate new snappi model

[selldinesh]

Description of PR

Summary:The apis for traffic and capture operations have been chnaged in the latest snappi model, this PR accommodates those changes
Fixes # (issue)

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• Test case(new/improvement)

Back port request

• 202012
• 202205
• 202305
• 202311
• 202405

Approach

What is the motivation for this PR?

How did you do it?

Modified traffic and capture related apis to the new snappi model

How did you verify/test it?

Any platform specific information?

Supported testbed topology if it's a new test case?

Documentation

[mssonicbld]

/azp run

[linux-foundation-easycla]

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[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[sdszhang]

Please add a README for the steps, and requried Ixnetwork version.

@developfast can you review?

[developfast]

Which version is this?

[developfast]

putting a hold on this as it may break our internal testing - to verify which version of snappi this is

[sdszhang]

putting a hold on this as it may break our internal testing - to verify which version of snappi this is

Hi @developfast , how do we procced further on this?